Yad Vashem means 'a memorial and a name' and it is a museum and a memorial to the victims of the Holocaust or Shoah. The Hebrew phrase was taken from Isaiah 56:5.
yad vashem
JPS Tanakh 1917
Even unto them will I give in My house And within My walls a monument and a memorial Better than sons and daughters; I will give them an everlasting memorial, That shall not be cut off. Isaiah 56:5